Maxview MHA12CD/S User Instructions

User Instructions - Fully Screened Medium and High
Gain Group C/D 'Precision' Masthead Amplifier Range
Introduction
The Maxview medium and high gain group C/D 'Precision' masthead amplifiers feature low noise figures and
are designed to improve signal performance in weak UHF TV group C/D signal areas. The input filtering
provides good rejection of out of group TV signals. They are suitable for mast fixing with the releasable cable
tie provided or for wall fixing using the drill out tabs. The 'Precision' masthead amplifiers are fully screened and
suitable for use in either professional MATV or domestic systems. The amplifiers are designed for indoor or
outdoor use, and for mounting close to the antenna, requiring +12V d.c. line powering from either the MHP1,
MHP2 or MHPL1 power supply units.
The medium gain MHA12CD/S provides excellent performance in smaller systems utilising relatively short
cable runs (approx. <15m). The high gain MHA23CD/S Group C/D amplifier is ideally suited for either small or
larger systems where longer cable runs may be employed. The MHA23CD/S caters for extremely weak
signals and/or long cable run installations and is provided with a cascade line power option.
Performance Specifications
Model
Inputs
Bandwidth (MHz)
Gain
Noise Figure
Max O/P -46dB Cross Mod
2 TV Channels
4 TV Channels
5 TV Channels
Input RLR (75ohm)
Output RLR (75ohm)
No. of Outputs
12V Power Requirement
Through Line Powering
R.F. Connector Type
Fully Screened
Maxview reserve the right to alter their designs or specifications without prior notice.
The figures quoted are typical and are subject to normal production tolerances.
Typical Applications
Single UHF Amplifier Application
For Weak Group CD Signal Areas
AMPLIFIED GROUP C/D
UHF TV SIGNALS
230V MAINS INPUT
MHA12CD/S MHA23CD/S
MHA12CD/S MHA23CD/S
1 x Group C/D 1 x Group C/D
680-860 680-860
12dB
2.7dB
112dBµV 108dBµV
107dBµV 103dBµV
106dBµV 102dBµV
10dB
10dB
1
20mA
No Available
'F' connector 'F' connector
Yes
GROUP C/D UHF AERIAL
MHA12CD/S
+12V d.c. LINE POWER
TV AE
MHP
PSU
TV
PLATE
23dB
3dB
10dB
10dB
1
35mA
Yes
Single UHF Amplifier Application
For Very Weak Group CD Signal Areas
230V MAINS INPUT
GROUP C/D UHF AERIAL
MHA12CD/S
MHA23CD/S
LINE POWER
AMPLIFIED GROUP C/D
UHF TV SIGNALS
+12V d.c. LINE POWER
TV AE
MHP
PSU
TV
PLATE
9111099 Iss 3